1919.] NATURAL SCIENCES OF PHILADELPHIA. 167 



Jaminia trilamillata Risso (91). No longer exists in the col- 

 lection. 



Jaminia heterostropha Risso (91, fig. 31). From the figure and 

 description this is certainly the Bulimus quadridens of Bruguiere, 

 but the specimens in the collection now bearing the label of /. hetero- 

 stropha are Pupa lunalica of Jan. 



Jaminia quinque lamellata Risso (91). This is Pupa {Torquilla) 

 similis of Bruguiere. 



Jaminia septem dentata Risso (91). Pupa avenacea Bruguiere. 



Jaminia heptodonta Risso (92). Not now to be found in the 

 collection. 



Jaminia multi dentata Risso (92). I have determined this to 

 be identical with Clausilia polita Risso, ( - Pupa polita). 



Jaminia niso Risso (92). A variety of Pupa quadridens Mliller. 



Auricula myosotis (Drap.) Risso (93). Alexia myosotis Morch. 



Pyramidella gracilis (Brocchi) Risso (93), and Pyramidella 

 CARiNATA Risso (94). Thesc two fossil species I leave without 

 comment. 



Ancylus lacustris (Miill.) Risso (94). The Ancylus which is 

 actually in the collection is the A. gibbosus Bourguignat, common 

 at Nice. But Risso's description does not accord with the speci- 

 mens of the carton labelled lactistris. Bourguignat has fully dis- 

 cussed the case in his synonymical study and figured the shell. 



Lymnea pereger (Miiller) Risso (95). Correct. 



Lymnea auricula Risso (95). Lvmnceus vulgaris Carl Pfeiffer. 



L^TMNEA minuta (Drap.) Risso (95). The carton contains a 

 mixture of L. truncatula and young L. palustris Miiller. 



Lymnea leachiana Risso (95, fig. 32). Lymncea palustris Miiller. 



Lymnea labrosa Risso (96). The shell described by Risso is 

 apparently no longer in the collection. The carton is occupied by 

 Physa fontinalis, which is not a native of the Department and does 

 not agree with Risso's description. 



Phyza fontinalis (L.) Risso (96). This is Physa suhopaca La- 

 marck, which is no longer found in the Department. 



Phyza hypnorum (L.) Risso (96). This species is rare in the 

 Department. 



